1. Perception 2

2. Figure 2-19 An example of context effects in perception. Top-Down Processes

3. The same physical stimulus can be interpreted differently depending on perceptual set, e.g., context effects. When is the middle character the letter B and when is it the number 13? Perceptual Set Context Effects

4. Top-Down Processes Perceptual Learning

5. Top-Down Processes Change Blindness http://viscog.beckman.uiuc.edu/grafs/demos/10.html

6. Word Superiority Effect Top-Down Processes K OWRK WORK K D

7. Bottom-Up and Top-Down Processing working together Word Perception Connectionist Model Features (lines) Letters Words I B Bat _at Flying Animal

8. Figure 2-24 (p. 73) Example of stimuli used in the PET scan study of processing words. See text for explanation. Word Perception Neuropsychological Perspective

9. Direct Perception vs. Constructivist Approach Biological motion http://www.psico.univ.trieste.it/labs/acn- lab/eng_p/e051c1m1_curr.html http://www.psico.univ.trieste.it/labs/acn- lab/eng_p/e051c1m1_curr.html

10. Optic flow

11. Affordances:  Information from the stimulus that specifies how it can be used Direct Perception

12. (Ventral) (Dorsal)

13. Visual Agnosia http://scien.stanford.edu/class/psych221/projects/06/cukur/intro_files/image021.jpg

14. Visual Agnosia Associative Visual Agnosia  Can copy, but unaware what it is; cannot assign meaning to object  Difficulty in transferring visual info into words Apperceptive Visual Agnosia  Cannot recognize by shape  Cannot copy drawings  Often involves ‘prosopagnosia’ http://scien.stanford.edu/class/psych221/projects/06/cukur/intro_files/image021.jpg

15. Agnosia

16. Identification of Faces and Members of Categories Prosopagnosia The Fusiform Face Area: http://www.psy.vanderbilt.edu/faculty/gauthier/picts/mona_lisa.jpg

19. Thatcher illusion http://www.face-rec.org/interesting-papers/Other/SchCarLed2003.pdf

20. Subliminal Perception Can subliminal messages change our behaviors?